Differences Between Working Out in Your 20s and Your 30s

Length of Workout:
20s: Sure I'll take two classes in a row. I've got nowhere to be.
30s: Get in, get out, nobody talk to me, just gotta get it done!

Schedule:
20s: Wake up for 90 minutes of hot yoga, take a three-hour hike, then follow it with a SoulCycle class!
30s: I think I can squeeze in 20 minutes of a Jillian Michaels video.

Class Timing:
20s: Get to class early to meet my BFF and to get the best spot.
30s: I barely make it there on time but am typically five minutes late.